CVE-2009-3525
The pyGrub boot loader in Xen 3.0.3, 3.3.0, and Xen-3.3.1 does not support the password option in grub.conf for para-virtualized guests, which allows attackers with access to the para-virtualized guest console to boot the guest or modify the guest's…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.24%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The pyGrub boot loader in Xen 3.0.3, 3.3.0, and Xen-3.3.1 does not support the password option in grub.conf for para-virtualized guests, which allows attackers with access to the para-virtualized guest console to boot the guest or modify the guest's kernel boot parameters without providing the expected password.
- CVSS 2.0
- 7.2 HIGHAV:L/AC:L/Au:N/C:C/I:C/A:C
- EPSS
- 1.24% probability · 67th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-264
- Affected
- xen/xen
- Source
- cve@mitre.org
References
- http://lists.opensuse.org/opensuse-security-announce/2010-05/msg00002.html
- http://secunia.com/advisories/36908Vendor Advisory
- http://www.openwall.com/lists/oss-security/2009/09/25/1Patch
- http://www.redhat.com/support/errata/RHSA-2009-1472.htmlVendor Advisory
- http://www.securityfocus.com/bid/36523Exploit
- http://www.securitytracker.com/id?1022950
- http://xenbits.xensource.com/xen-unstable.hg?rev/8f783adc0ee3Exploit
- https://bugzilla.redhat.com/show_bug.cgi?id=525740Exploit, Patch
- https://bugzilla.redhat.com/show_bug.cgi?id=525740#c0Exploit, Patch
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9466
- http://lists.opensuse.org/opensuse-security-announce/2010-05/msg00002.html
- http://secunia.com/advisories/36908Vendor Advisory
- http://www.openwall.com/lists/oss-security/2009/09/25/1Patch
- http://www.redhat.com/support/errata/RHSA-2009-1472.htmlVendor Advisory
- http://www.securityfocus.com/bid/36523Exploit
- http://www.securitytracker.com/id?1022950
- http://xenbits.xensource.com/xen-unstable.hg?rev/8f783adc0ee3Exploit
- https://bugzilla.redhat.com/show_bug.cgi?id=525740Exploit, Patch
- https://bugzilla.redhat.com/show_bug.cgi?id=525740#c0Exploit, Patch
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9466
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.